Spirals II, by Matt Giwer, is a video art program written for Bally BASIC. It also works without modification for "AstroBASIC." Spirals, the original version of this program appeared in ARCADIAN 2, no. 8 (Jun. 23, 1980): 69. This updated version of the program was published in ARCADIAN 2, no. 10 (Sep. 17, 1980): 95.
Spirals II creates randomly-sized, diamond-shaped patterns in B&W using the LINE command. Spirals II is one of six programs submitted to the Arcadian on May 29, 1980. The other five programs were Boxes (printed as Diminishing Boxes), I Ching, Life IV, Morse Code, and Spiral (printed as Spirals). Two of the six programs (I Ching and Morse Code) were never printed in the Arcadian.
0:00 - Spirals II Titles and Overview 2:31 - Spirals II Running 8:19 - Spirals II "AstroBASIC" Listing 8:42 - End Credits
A spiral is a "winding in a continuous and gradually widening (or tightening) curve, either around a central point on a flat plane or about an axis so as to form a cone." Since this art has no curves, it isn't a spiral; therefore, Spirals II is misnamed, as it only uses straight lines. This insignificant naming issue doesn't diminish the neat art that is created from this short program.